Fourth Volume - New Description of the Sun Dial - Problems - Page 190 Fourth Volume - New Description of the Sun Dial - Problems - Page 191
Fourth Volume - New Description of the Sun Dial - Problems - Page 189



Fourth Volume - New Description of the Sun Dial - Problems - Page 190 Fourth Volume - New Description of the Sun Dial - Problems - Page 191 Fourth Volume - New Description of the Sun Dial - Problems - Page 192